Expansion joint



Feb. 28, 1933. j cHER 9 1,899,435

EXPANSION JOINT Original File M y 5. 192a [nae/210? dlberi CIwcher;

Patented Feb. 28, 1933 UNITED STATES PATENT OFFICE amma'r'c. FISCHER, or cnrcaao, rumors. assrenoa 'ro 'rnn PHILIP canny MANU- rac'runme couramr; a oonronarron or 01110 EXPANSION JOINT Application Med 1., 5, 1926, Serial The present invention relates to expansion 'oint and thelike composition material, and

as'particular reference to the use of matted such material. As described in the present invention vegetable fibrous matter when being pre ared for insulation'material is degumme by treating withcaustic and water, is then matted by driving thru rolls after being washed and placed in heating ovens for drying. This process distinguishes somewhat over the felting process in which fibres in their finally or ultimately divided state are felted togetherafter'ding thru beaters, and are then interlaced and gathered,to-

gether in a continuous felt sheet.

' This invention consists in taking foliations of matted fibrous material of preferablylong,

linear dimension, waterproofing same with an excess waterproofing and mattlng same together under pressure, the waterproofing.

material adhering the foliations together, making a dense waterproofed binding medium intermediate of the irregularly matted foliated sections of the matted fibrous material. These waterproofed mats may be internally waterproofed or not as desired. This built-up highly resilient foliated structure of ductile binding material and resilient foliated fibrous'material provides a most excellent expansion joint.

In the drawing:

Fig. 1 is a perspective view of strip embodying the present invention; and

Fig. 2 is a plan view of one of the foliated pieces which is incorporated in the binder.

Suitable means are provided for water-' proofing the fibrous material internally by using an oil. or a low melting point saturant, such for instance as is used in saturating roofing felt, which is usually of a much lower melting point than the coating which is placed on the outside of roofingpaper. This,

of course, makes the mat flexible and more readily enters the pores of the fibrous mat. If it is desirable these fibrous mats may be taken in an unsaturated state and coated with a high melting point bituminous material, or

no. 106,985. Renewed June so, 1930.

bituminous material the fibrous material can be readily water-proofed bya dense coating of a high melting point material. Also in these fibrous mats, a process may be followed in which the fibrous mats are treated ,with

lighter oils, as described, and then later'coated with a high melting point bituminous waterproofing material, said mats thus being formed into a matted sheet by pressure rolls of brous material, pre erably vegetable fibrous material, formed into relatively small mats, which mats are individually coated with compressible bituminous preferably of high melting point, and all of these mats are then firmly adhered together into desired form by a binder, preferably bituminous material, thus forming foliations preferably of long linear dimension and sep arated by zones of compressible bituminous material. It will be appreciated that such a construction for-an expansion joint provides a light and strikingly resilient body which provides the maximum compressibility and expansibility so necessary to the demands of an expansion joint. By providing the separate mats with coatings, particularly of high melting point asphalt, the separate mats are firmly bound together, and full efiect is given to each cushioning function of the separate mats thru the intermediary of the intervening coatings of bituminous material.

I claim: i

1. A foliated structure consisting of matted vegetable fibrous material, alternating in foliations of long linear dimension with a ductile waterproofed material, said fibrous foliations lying in overlapping irregular position intermediately of layers of waterproofing material, and formed into strips of expansion joint.

2. A preformed expansion joint consisting of a structure of foliations of long linear dimension, said foliations consisting of M improved expansion omt thus consists material,

fibrous matted material, lying in irregular overlapping posititon intermediately layers of waterproofing ductile material, said foliations oi fibrous material being entirely sur- 5 rounded by the ductile material.

.3. An expansion strip formed by combining numerous foliations of long linear dimension consisting of fibrous matted material individually coated with bituminous material, pressed into strips lying in irregular overlapping position and; held together by a. suitable binder adapted for use as expansion joints.

4. An expansion strip formed by combining numerous waterproofedfoliations of fibrous matted material, said foliations being of long linear dimension, as described, coated and adhered together in irregular overlapping position by a suitable binder, for use as expansion joints.

5. A preformed expansion joint comprising individual mats of fibrous material coated with high melting point asphalt and united so that the separate foliations lie in irregularly overlapping relation with the bituminous material separating the individual foliations.

6. In a preformed expansion joint strip a fibrous body waterproofed with a high melting point bituminous material, said waterproofed body being further waterproofed with a Waterproofing coating of ductile character.

7. In a preformed expansion joint strip a fibrous body coated with a hi h melting point bituminous material, said ituminous coated fibrous material beingfurther waterproofed with a layer of ductile character.

Signed at Chicago, Illinois this 20 day of April, 1926.

ALBERT C. FISCHER. 

